| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.tajo.engine.parser; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.Lists; |
| import org.antlr.v4.runtime.ANTLRInputStream; |
| import org.antlr.v4.runtime.CommonTokenStream; |
| import org.antlr.v4.runtime.misc.NotNull; |
| import org.antlr.v4.runtime.tree.TerminalNode; |
| import org.apache.commons.lang.StringEscapeUtils; |
| import org.apache.tajo.algebra.*; |
| import org.apache.tajo.algebra.Aggregation.GroupType; |
| import org.apache.tajo.algebra.LiteralValue.LiteralType; |
| import org.apache.tajo.catalog.CatalogConstants; |
| import org.apache.tajo.engine.parser.SQLParser.*; |
| |
| import java.util.*; |
| |
| import static org.apache.tajo.algebra.Aggregation.GroupElement; |
| import static org.apache.tajo.algebra.CreateTable.*; |
| import static org.apache.tajo.common.TajoDataTypes.Type; |
| import static org.apache.tajo.engine.parser.SQLParser.*; |
| |
| public class SQLAnalyzer extends SQLParserBaseVisitor<Expr> { |
| private SQLParser parser; |
| |
| public SQLAnalyzer() { |
| } |
| |
| public Expr parse(String sql) { |
| ANTLRInputStream input = new ANTLRInputStream(sql); |
| SQLLexer lexer = new SQLLexer(input); |
| CommonTokenStream tokens = new CommonTokenStream(lexer); |
| this.parser = new SQLParser(tokens); |
| parser.setBuildParseTree(true); |
| parser.removeErrorListeners(); |
| |
| parser.setErrorHandler(new SQLErrorStrategy()); |
| parser.addErrorListener(new SQLErrorListener()); |
| |
| SqlContext context; |
| try { |
| context = parser.sql(); |
| } catch (SQLParseError e) { |
| throw new SQLSyntaxError(e); |
| } |
| return visitSql(context); |
| } |
| |
| private static boolean checkIfExist(Object obj) { |
| return obj != null; |
| } |
| |
| @Override |
| public Expr visitSql(SqlContext ctx) { |
| return visit(ctx.statement()); |
| } |
| |
| @Override |
| public Expr visitNon_join_query_expression(SQLParser.Non_join_query_expressionContext ctx) { |
| |
| Expr current = visitNon_join_query_term(ctx.non_join_query_term()); |
| if (ctx.getChildCount() == 1) { |
| return current; |
| } |
| |
| OpType operatorType; |
| Expr left; |
| for (int i = 1; i < ctx.getChildCount(); i++) { |
| int idx = i; |
| boolean distinct = true; |
| |
| if (ctx.getChild(idx) instanceof TerminalNode) { |
| if (((TerminalNode) ctx.getChild(idx)).getSymbol().getType() == UNION) { |
| operatorType = OpType.Union; |
| } else { |
| operatorType = OpType.Except; |
| } |
| |
| idx++; |
| |
| if (ctx.getChild(idx) instanceof TerminalNode) { |
| if (((TerminalNode) ctx.getChild(idx)).getSymbol().getType() == ALL) { |
| distinct = false; |
| } |
| |
| idx++; |
| } |
| |
| SQLParser.Query_termContext queryTermContext = |
| (SQLParser.Query_termContext) ctx.getChild(idx); |
| Expr right = visitQuery_term(queryTermContext); |
| |
| left = current; |
| current = new SetOperation(operatorType, left, right, distinct); |
| |
| i = idx; |
| } |
| } |
| |
| return current; |
| } |
| |
| @Override |
| public Expr visitNon_join_query_term(Non_join_query_termContext ctx) { |
| |
| Expr current = visitNon_join_query_primary(ctx.non_join_query_primary()); |
| Expr left; |
| |
| for (int i = 1; i < ctx.getChildCount();) { |
| int idx = i; |
| boolean distinct = true; |
| |
| if (ctx.getChild(idx) instanceof TerminalNode) { |
| if (((TerminalNode) ctx.getChild(idx)).getSymbol().getType() == INTERSECT) { |
| idx++; |
| } |
| |
| if (ctx.getChild(idx) instanceof TerminalNode) { |
| if (((TerminalNode) ctx.getChild(idx)).getSymbol().getType() == ALL) { |
| distinct = false; |
| idx++; |
| } |
| } |
| |
| Query_primaryContext queryPrimaryContext = (Query_primaryContext) ctx.getChild(idx); |
| Expr right = visitQuery_primary(queryPrimaryContext); |
| |
| left = current; |
| current = new SetOperation(OpType.Intersect, left, right, distinct); |
| |
| i+=idx; |
| } |
| } |
| |
| return current; |
| |
| } |
| |
| @Override |
| public Expr visitQuery_specification(SQLParser.Query_specificationContext ctx) { |
| Expr current = null; |
| if (ctx.table_expression() != null) { |
| current = visitFrom_clause(ctx.table_expression().from_clause()); |
| |
| if (ctx.table_expression().where_clause() != null) { |
| Selection selection = visitWhere_clause(ctx.table_expression().where_clause()); |
| selection.setChild(current); |
| current = selection; |
| } |
| |
| if (ctx.table_expression().groupby_clause() != null) { |
| Aggregation aggregation = visitGroupby_clause(ctx.table_expression().groupby_clause()); |
| aggregation.setChild(current); |
| current = aggregation; |
| |
| if (ctx.table_expression().having_clause() != null) { |
| Expr havingCondition = visitBoolean_value_expression( |
| ctx.table_expression().having_clause().boolean_value_expression()); |
| Having having = new Having(havingCondition); |
| having.setChild(current); |
| current = having; |
| } |
| } |
| |
| if (ctx.table_expression().orderby_clause() != null) { |
| Sort sort = visitOrderby_clause(ctx.table_expression().orderby_clause()); |
| sort.setChild(current); |
| current = sort; |
| } |
| |
| if (ctx.table_expression().limit_clause() != null) { |
| Limit limit = visitLimit_clause(ctx.table_expression().limit_clause()); |
| limit.setChild(current); |
| current = limit; |
| } |
| } |
| |
| Projection projection = visitSelect_list(ctx.select_list()); |
| |
| if (ctx.set_qualifier() != null && ctx.set_qualifier().DISTINCT() != null) { |
| projection.setDistinct(); |
| } |
| |
| if (current != null) { |
| projection.setChild(current); |
| } |
| |
| current = projection; |
| |
| return current; |
| } |
| |
| /** |
| * <pre> |
| * select_list |
| * : select_sublist (COMMA select_sublist)* |
| * ; |
| * </pre> |
| * @param ctx |
| * @return |
| */ |
| @Override |
| public Projection visitSelect_list(SQLParser.Select_listContext ctx) { |
| Projection projection = new Projection(); |
| NamedExpr[] targets = new NamedExpr[ctx.select_sublist().size()]; |
| for (int i = 0; i < targets.length; i++) { |
| targets[i] = visitSelect_sublist(ctx.select_sublist(i)); |
| } |
| projection.setNamedExprs(targets); |
| |
| return projection; |
| } |
| |
| /** |
| * <pre> |
| * select_sublist |
| * : derived_column |
| * | asterisked_qualifier |
| * ; |
| * </pre> |
| * @param ctx |
| * @return |
| */ |
| @Override |
| public NamedExpr visitSelect_sublist(SQLParser.Select_sublistContext ctx) { |
| if (ctx.qualified_asterisk() != null) { |
| return visitQualified_asterisk(ctx.qualified_asterisk()); |
| } else { |
| return visitDerived_column(ctx.derived_column()); |
| } |
| } |
| |
| @Override |
| public RelationList visitFrom_clause(SQLParser.From_clauseContext ctx) { |
| Expr [] relations = new Expr[ctx.table_reference_list().table_reference().size()]; |
| for (int i = 0; i < relations.length; i++) { |
| relations[i] = visitTable_reference(ctx.table_reference_list().table_reference(i)); |
| } |
| return new RelationList(relations); |
| } |
| |
| @Override |
| public Selection visitWhere_clause(SQLParser.Where_clauseContext ctx) { |
| return new Selection(visitSearch_condition(ctx.search_condition())); |
| } |
| |
| @Override |
| public Aggregation visitGroupby_clause(SQLParser.Groupby_clauseContext ctx) { |
| Aggregation clause = new Aggregation(); |
| |
| // If grouping group is not empty |
| if (ctx.grouping_element_list().grouping_element().get(0).empty_grouping_set() == null) { |
| int elementSize = ctx.grouping_element_list().grouping_element().size(); |
| ArrayList<GroupElement> groups = new ArrayList<GroupElement>(elementSize + 1); |
| ArrayList<Expr> ordinaryExprs = null; |
| int groupSize = 1; |
| groups.add(null); |
| |
| for (int i = 0; i < elementSize; i++) { |
| SQLParser.Grouping_elementContext element = |
| ctx.grouping_element_list().grouping_element().get(i); |
| if (element.ordinary_grouping_set() != null) { |
| if (ordinaryExprs == null) { |
| ordinaryExprs = new ArrayList<Expr>(); |
| } |
| Collections.addAll(ordinaryExprs, getRowValuePredicandsFromOrdinaryGroupingSet(element.ordinary_grouping_set())); |
| } else if (element.rollup_list() != null) { |
| groupSize++; |
| groups.add(new GroupElement(GroupType.Rollup, |
| getRowValuePredicandsFromOrdinaryGroupingSetList(element.rollup_list().c))); |
| } else if (element.cube_list() != null) { |
| groupSize++; |
| groups.add(new GroupElement(GroupType.Cube, |
| getRowValuePredicandsFromOrdinaryGroupingSetList(element.cube_list().c))); |
| } |
| } |
| |
| if (ordinaryExprs != null) { |
| groups.set(0, new GroupElement(GroupType.OrdinaryGroup, ordinaryExprs.toArray(new Expr[ordinaryExprs.size()]))); |
| clause.setGroups(groups.subList(0, groupSize).toArray(new GroupElement[groupSize])); |
| } else if (groupSize > 1) { |
| clause.setGroups(groups.subList(1, groupSize).toArray(new GroupElement[groupSize - 1])); |
| } |
| } |
| |
| return clause; |
| } |
| |
| @Override |
| public Sort visitOrderby_clause(SQLParser.Orderby_clauseContext ctx) { |
| int size = ctx.sort_specifier_list().sort_specifier().size(); |
| Sort.SortSpec specs [] = new Sort.SortSpec[size]; |
| for (int i = 0; i < size; i++) { |
| SQLParser.Sort_specifierContext specContext = ctx.sort_specifier_list().sort_specifier(i); |
| Expr column = visitRow_value_predicand(specContext.key); |
| specs[i] = new Sort.SortSpec(column); |
| if (specContext.order_specification() != null) { |
| if (specContext.order.DESC() != null) { |
| specs[i].setDescending(); |
| } |
| } |
| |
| if (specContext.null_ordering() != null) { |
| if (specContext.null_ordering().FIRST() != null) { |
| specs[i].setNullFirst(); |
| } |
| } |
| } |
| |
| return new Sort(specs); |
| } |
| |
| @Override |
| public Limit visitLimit_clause(SQLParser.Limit_clauseContext ctx) { |
| return new Limit(visitNumeric_value_expression(ctx.numeric_value_expression())); |
| } |
| |
| @Override |
| public Expr visitJoined_table(SQLParser.Joined_tableContext ctx) { |
| Expr top = visitTable_primary(ctx.table_primary()); |
| |
| // The following loop builds a left deep join tree. |
| Join join; |
| for (int i = 0; i < ctx.joined_table_primary().size(); i++) { |
| join = visitJoined_table_primary(ctx.joined_table_primary(i)); |
| join.setLeft(top); |
| top = join; |
| } |
| |
| return top; |
| } |
| |
| @Override |
| public Join visitJoined_table_primary(SQLParser.Joined_table_primaryContext ctx) { |
| Join join; |
| if (ctx.CROSS() != null) { |
| join = new Join(JoinType.CROSS); |
| } else if (ctx.UNION() != null) { |
| join = new Join(JoinType.UNION); |
| } else { // qualified join or natural |
| if (ctx.join_type() != null && ctx.join_type().outer_join_type() != null) { |
| Outer_join_type_part2Context outer_join_typeContext = ctx.join_type().outer_join_type() |
| .outer_join_type_part2(); |
| if (outer_join_typeContext.FULL() != null) { |
| join = new Join(JoinType.FULL_OUTER); |
| } else if (outer_join_typeContext.LEFT() != null) { |
| join = new Join(JoinType.LEFT_OUTER); |
| } else { |
| join = new Join(JoinType.RIGHT_OUTER); |
| } |
| } else { |
| join = new Join(JoinType.INNER); |
| } |
| |
| if (ctx.NATURAL() != null) { |
| join.setNatural(); |
| } |
| |
| if (ctx.join_specification() != null) { // only for qualified join |
| if (ctx.join_specification().join_condition() != null) { |
| Expr searchCondition = visitSearch_condition(ctx.join_specification(). |
| join_condition().search_condition()); |
| join.setQual(searchCondition); |
| } else if (ctx.join_specification().named_columns_join() != null) { |
| ColumnReferenceExpr [] columns = getColumnReferences(ctx.join_specification(). |
| named_columns_join().column_reference_list()); |
| join.setJoinColumns(columns); |
| } |
| } |
| } |
| |
| join.setRight(visitTable_primary(ctx.right)); |
| return join; |
| } |
| |
| private Expr [] getRowValuePredicandsFromOrdinaryGroupingSetList(Ordinary_grouping_set_listContext ctx) { |
| ArrayList<Expr> rowValuePredicands = new ArrayList<Expr>(); |
| for (int i = 0; i < ctx.ordinary_grouping_set().size(); i++) { |
| Collections.addAll(rowValuePredicands, getRowValuePredicandsFromOrdinaryGroupingSet(ctx.ordinary_grouping_set(i))); |
| } |
| return rowValuePredicands.toArray(new Expr[rowValuePredicands.size()]); |
| } |
| |
| private Expr [] getRowValuePredicandsFromOrdinaryGroupingSet(Ordinary_grouping_setContext ctx) { |
| ArrayList<Expr> rowValuePredicands = new ArrayList<Expr>(); |
| if (ctx.row_value_predicand() != null) { |
| rowValuePredicands.add(visitRow_value_predicand(ctx.row_value_predicand())); |
| } |
| if (ctx.row_value_predicand_list() != null) { |
| Collections.addAll(rowValuePredicands, getRowValuePredicands(ctx.row_value_predicand_list())); |
| } |
| return rowValuePredicands.toArray(new Expr[rowValuePredicands.size()]); |
| } |
| |
| private Expr [] getRowValuePredicands(Row_value_predicand_listContext ctx) { |
| Expr [] rowValuePredicands = new Expr[ctx.row_value_predicand().size()]; |
| for (int i = 0; i < rowValuePredicands.length; i++) { |
| rowValuePredicands[i] = visitRow_value_predicand(ctx.row_value_predicand(i)); |
| } |
| return rowValuePredicands; |
| } |
| |
| private ColumnReferenceExpr [] getColumnReferences(Column_reference_listContext ctx) { |
| ColumnReferenceExpr [] columnRefs = new ColumnReferenceExpr[ctx.column_reference().size()]; |
| for (int i = 0; i < columnRefs.length; i++) { |
| columnRefs[i] = visitColumn_reference(ctx.column_reference(i)); |
| } |
| return columnRefs; |
| } |
| |
| @Override |
| public Expr visitTable_primary(SQLParser.Table_primaryContext ctx) { |
| if (ctx.table_or_query_name() != null) { |
| Relation relation = new Relation(ctx.table_or_query_name().getText()); |
| if (ctx.alias != null) { |
| relation.setAlias(ctx.alias.getText()); |
| } |
| return relation; |
| } else if (ctx.derived_table() != null) { |
| return new TablePrimarySubQuery(ctx.name.getText(), visit(ctx.derived_table().table_subquery())); |
| } else { |
| return null; |
| } |
| } |
| |
| |
| @Override |
| public Expr visitSubquery(SQLParser.SubqueryContext ctx) { |
| return visitQuery_expression(ctx.query_expression()); |
| } |
| |
| @Override |
| public BetweenPredicate visitBetween_predicate(SQLParser.Between_predicateContext ctx) { |
| Expr predicand = visitRow_value_predicand(ctx.predicand); |
| Expr begin = visitRow_value_predicand(ctx.between_predicate_part_2().begin); |
| Expr end = visitRow_value_predicand(ctx.between_predicate_part_2().end); |
| return new BetweenPredicate(checkIfExist(ctx.between_predicate_part_2().NOT()), |
| checkIfExist(ctx.between_predicate_part_2().SYMMETRIC()), predicand, begin, end); |
| } |
| |
| @Override |
| public CaseWhenPredicate visitSimple_case(SQLParser.Simple_caseContext ctx) { |
| Expr leftTerm = visitBoolean_value_expression(ctx.boolean_value_expression()); |
| CaseWhenPredicate caseWhen = new CaseWhenPredicate(); |
| |
| for (int i = 0; i < ctx.simple_when_clause().size(); i++) { |
| Simple_when_clauseContext simpleWhenCtx = ctx.simple_when_clause(i); |
| BinaryOperator bin = new BinaryOperator(OpType.Equals, leftTerm, |
| visitValue_expression(simpleWhenCtx.search_condition().value_expression())); |
| caseWhen.addWhen(bin, buildCaseResult(simpleWhenCtx.result())); |
| } |
| if (ctx.else_clause() != null) { |
| caseWhen.setElseResult(buildCaseResult(ctx.else_clause().result())); |
| } |
| return caseWhen; |
| } |
| |
| private Expr buildCaseResult(ResultContext result) { |
| if (result.NULL() != null) { |
| return new NullLiteral(); |
| } else { |
| return visitValue_expression(result.value_expression()); |
| } |
| } |
| |
| @Override public CaseWhenPredicate visitSearched_case(SQLParser.Searched_caseContext ctx) { |
| CaseWhenPredicate caseWhen = new CaseWhenPredicate(); |
| |
| for (int i = 0; i < ctx.searched_when_clause().size(); i++) { |
| Searched_when_clauseContext searchedWhenCtx = ctx.searched_when_clause(i); |
| caseWhen.addWhen( |
| visitSearch_condition(searchedWhenCtx.search_condition()), |
| buildCaseResult(searchedWhenCtx.result())); |
| } |
| if (ctx.else_clause() != null) { |
| caseWhen.setElseResult(buildCaseResult(ctx.else_clause().result())); |
| } |
| return caseWhen; |
| } |
| |
| @Override public Expr visitCommon_value_expression(SQLParser.Common_value_expressionContext ctx) { |
| if (checkIfExist(ctx.NULL())) { |
| return new NullLiteral(); |
| } else { |
| return visitChildren(ctx); |
| } |
| } |
| |
| @Override |
| public Expr visitParenthesized_value_expression(SQLParser.Parenthesized_value_expressionContext ctx) { |
| return visitValue_expression(ctx.value_expression()); |
| } |
| |
| @Override |
| public Expr visitBoolean_value_expression(SQLParser.Boolean_value_expressionContext ctx) { |
| Expr current = visitOr_predicate(ctx.or_predicate()); |
| return current; |
| } |
| |
| @Override |
| public Expr visitOr_predicate(SQLParser.Or_predicateContext ctx) { |
| Expr current = visitAnd_predicate(ctx.and_predicate()); |
| |
| Expr left; |
| Expr right; |
| for (int i = 0; i < ctx.or_predicate().size(); i++) { |
| left = current; |
| right = visitOr_predicate(ctx.or_predicate(i)); |
| current = new BinaryOperator(OpType.Or, left, right); |
| } |
| |
| return current; |
| } |
| |
| @Override |
| public Expr visitAnd_predicate(SQLParser.And_predicateContext ctx) { |
| Expr current = visitBoolean_factor(ctx.boolean_factor()); |
| |
| Expr left; |
| Expr right; |
| for (int i = 0; i < ctx.and_predicate().size(); i++) { |
| left = current; |
| right = visitAnd_predicate(ctx.and_predicate(i)); |
| current = new BinaryOperator(OpType.And, left, right); |
| } |
| |
| return current; |
| } |
| |
| @Override |
| public Expr visitBoolean_factor(SQLParser.Boolean_factorContext ctx) { |
| if (ctx.NOT() != null) { |
| return new NotExpr(visitBoolean_test(ctx.boolean_test())); |
| } else { |
| return visitBoolean_test(ctx.boolean_test()); |
| } |
| } |
| |
| @Override |
| public Expr visitBoolean_test(SQLParser.Boolean_testContext ctx) { |
| if (checkIfExist(ctx.is_clause())) { |
| Is_clauseContext isClauseContext = ctx.is_clause(); |
| if (checkIfExist(isClauseContext.NOT())) { |
| if (checkIfExist(ctx.is_clause().truth_value().TRUE())) { |
| return new NotExpr(visitBoolean_primary(ctx.boolean_primary())); |
| } else { |
| return visitBoolean_primary(ctx.boolean_primary()); |
| } |
| } else { |
| if (checkIfExist(ctx.is_clause().truth_value().TRUE())) { |
| return visitBoolean_primary(ctx.boolean_primary()); |
| } else { |
| return new NotExpr(visitBoolean_primary(ctx.boolean_primary())); |
| } |
| } |
| } else { |
| return visitBoolean_primary(ctx.boolean_primary()); |
| } |
| } |
| |
| @Override |
| public Expr visitBoolean_primary(SQLParser.Boolean_primaryContext ctx) { |
| if (ctx.predicate() != null) { |
| return visitPredicate(ctx.predicate()); |
| } else { |
| return visitBoolean_predicand(ctx.boolean_predicand()); |
| } |
| } |
| |
| @Override |
| public Expr visitBoolean_predicand(SQLParser.Boolean_predicandContext ctx) { |
| if (checkIfExist(ctx.nonparenthesized_value_expression_primary())) { |
| return visitNonparenthesized_value_expression_primary(ctx.nonparenthesized_value_expression_primary()); |
| } else { |
| return visitBoolean_value_expression(ctx.parenthesized_boolean_value_expression().boolean_value_expression()); |
| } |
| } |
| |
| @Override |
| public Expr visitNonparenthesized_value_expression_primary( |
| SQLParser.Nonparenthesized_value_expression_primaryContext ctx) { |
| return visitChildren(ctx); |
| } |
| |
| @Override |
| public Expr visitRow_value_predicand(SQLParser.Row_value_predicandContext ctx) { |
| if (checkIfExist(ctx.row_value_special_case())) { |
| return visitRow_value_special_case(ctx.row_value_special_case()); |
| } else { |
| return visitRow_value_constructor_predicand(ctx.row_value_constructor_predicand()); |
| } |
| } |
| |
| @Override |
| public Expr visitRow_value_constructor_predicand(SQLParser.Row_value_constructor_predicandContext ctx) { |
| if (checkIfExist(ctx.boolean_predicand())) { |
| return visitBoolean_predicand(ctx.boolean_predicand()); |
| } else { |
| return visitCommon_value_expression(ctx.common_value_expression()); |
| } |
| } |
| |
| @Override |
| public BinaryOperator visitComparison_predicate(SQLParser.Comparison_predicateContext ctx) { |
| TerminalNode operator = (TerminalNode) ctx.comp_op().getChild(0); |
| return new BinaryOperator(tokenToExprType(operator.getSymbol().getType()), |
| visitRow_value_predicand(ctx.left), |
| visitRow_value_predicand(ctx.right)); |
| } |
| |
| @Override |
| public Expr visitNumeric_value_expression(SQLParser.Numeric_value_expressionContext ctx) { |
| Expr current = visitTerm(ctx.term(0)); |
| |
| Expr left; |
| Expr right; |
| for (int i = 1; i < ctx.getChildCount(); i++) { |
| left = current; |
| TerminalNode operator = (TerminalNode) ctx.getChild(i++); |
| right = visitTerm((TermContext) ctx.getChild(i)); |
| |
| if (operator.getSymbol().getType() == PLUS) { |
| current = new BinaryOperator(OpType.Plus, left, right); |
| } else { |
| current = new BinaryOperator(OpType.Minus, left, right); |
| } |
| } |
| |
| return current; |
| } |
| |
| @Override |
| public Expr visitTerm(SQLParser.TermContext ctx) { |
| Expr current = visitFactor(ctx.factor(0)); |
| |
| Expr left; |
| Expr right; |
| for (int i = 1; i < ctx.getChildCount(); i++) { |
| left = current; |
| TerminalNode operator = (TerminalNode) ctx.getChild(i++); |
| right = visitFactor((FactorContext) ctx.getChild(i)); |
| |
| if (operator.getSymbol().getType() == MULTIPLY) { |
| current = new BinaryOperator(OpType.Multiply, left, right); |
| } else if (operator.getSymbol().getType() == DIVIDE) { |
| current = new BinaryOperator(OpType.Divide, left, right); |
| } else { |
| current = new BinaryOperator(OpType.Modular, left, right); |
| } |
| } |
| |
| return current; |
| } |
| |
| @Override public Expr visitFactor(SQLParser.FactorContext ctx) { |
| Expr current = visitNumeric_primary(ctx.numeric_primary()); |
| if (checkIfExist(ctx.sign()) && checkIfExist(ctx.sign().MINUS())) { |
| current = new SignedExpr(true, current); |
| } |
| return current; |
| } |
| |
| @Override |
| public Expr visitNumeric_primary(SQLParser.Numeric_primaryContext ctx) { |
| Expr current = null; |
| if (checkIfExist(ctx.value_expression_primary())) { |
| current = visitValue_expression_primary(ctx.value_expression_primary()); |
| for (int i = 0; i < ctx.CAST_EXPRESSION().size(); i++) { |
| current = new CastExpr(current, visitData_type(ctx.cast_target(i).data_type())); |
| } |
| } else if (checkIfExist(ctx.numeric_value_function())) { |
| current = visitNumeric_value_function(ctx.numeric_value_function()); |
| } |
| |
| return current; |
| } |
| |
| public static OpType tokenToExprType(int tokenId) { |
| switch (tokenId) { |
| case SQLParser.UNION: return OpType.Union; |
| case SQLParser.EXCEPT: return OpType.Except; |
| case SQLParser.INTERSECT: return OpType.Intersect; |
| |
| case SQLParser.AND: return OpType.And; |
| case SQLParser.OR: return OpType.Or; |
| |
| case SQLParser.EQUAL: return OpType.Equals; |
| case SQLParser.NOT_EQUAL: return OpType.NotEquals; |
| case SQLParser.LTH: return OpType.LessThan; |
| case SQLParser.LEQ: return OpType.LessThanOrEquals; |
| case SQLParser.GTH: return OpType.GreaterThan; |
| case SQLParser.GEQ: return OpType.GreaterThanOrEquals; |
| |
| case SQLParser.MULTIPLY: return OpType.Multiply; |
| case SQLParser.DIVIDE: return OpType.Divide; |
| case SQLParser.MODULAR: return OpType.Modular; |
| case SQLParser.PLUS: return OpType.Plus; |
| case SQLParser.MINUS: return OpType.Minus; |
| |
| default: throw new RuntimeException("Unknown Token Id: " + tokenId); |
| } |
| } |
| |
| @Override |
| public InPredicate visitIn_predicate(SQLParser.In_predicateContext ctx) { |
| return new InPredicate(visitChildren(ctx.numeric_value_expression()), |
| visitIn_predicate_value(ctx.in_predicate_value()), ctx.NOT() != null); |
| } |
| |
| @Override |
| public Expr visitIn_predicate_value(SQLParser.In_predicate_valueContext ctx) { |
| if (checkIfExist(ctx.in_value_list())) { |
| int size = ctx.in_value_list().row_value_expression().size(); |
| Expr [] exprs = new Expr[size]; |
| for (int i = 0; i < size; i++) { |
| exprs[i] = visitRow_value_expression(ctx.in_value_list().row_value_expression(i)); |
| } |
| return new ValueListExpr(exprs); |
| } else { |
| return new SimpleTableSubQuery(visitChildren(ctx.table_subquery())); |
| } |
| } |
| |
| @Override |
| public Expr visitArray(SQLParser.ArrayContext ctx) { |
| int size = ctx.numeric_value_expression().size(); |
| Expr [] exprs = new Expr[size]; |
| for (int i = 0; i < size; i++) { |
| exprs[i] = visit(ctx.numeric_value_expression(i)); |
| } |
| return new ValueListExpr(exprs); |
| } |
| |
| @Override |
| public Expr visitPattern_matching_predicate(SQLParser.Pattern_matching_predicateContext ctx) { |
| Expr predicand = visitChildren(ctx.row_value_predicand()); |
| Expr pattern = new LiteralValue(stripQuote(ctx.Character_String_Literal().getText()), |
| LiteralType.String); |
| |
| if (checkIfExist(ctx.pattern_matcher().negativable_matcher())) { |
| boolean not = ctx.pattern_matcher().NOT() != null; |
| Negativable_matcherContext matcher = ctx.pattern_matcher().negativable_matcher(); |
| if (checkIfExist(matcher.LIKE())) { |
| return new PatternMatchPredicate(OpType.LikePredicate, not, predicand, pattern); |
| } else if (checkIfExist(matcher.ILIKE())) { |
| return new PatternMatchPredicate(OpType.LikePredicate, not, predicand, pattern, true); |
| } else if (checkIfExist(matcher.SIMILAR())) { |
| return new PatternMatchPredicate(OpType.SimilarToPredicate, not, predicand, pattern); |
| } else if (checkIfExist(matcher.REGEXP()) || checkIfExist(matcher.RLIKE())) { |
| return new PatternMatchPredicate(OpType.Regexp, not, predicand, pattern); |
| } else { |
| throw new SQLSyntaxError("Unsupported predicate: " + matcher.getText()); |
| } |
| } else if (checkIfExist(ctx.pattern_matcher().regex_matcher())) { |
| Regex_matcherContext matcher = ctx.pattern_matcher().regex_matcher(); |
| if (checkIfExist(matcher.Similar_To())) { |
| return new PatternMatchPredicate(OpType.Regexp, false, predicand, pattern, false); |
| } else if (checkIfExist(matcher.Not_Similar_To())) { |
| return new PatternMatchPredicate(OpType.Regexp, true, predicand, pattern, false); |
| } else if (checkIfExist(matcher.Similar_To_Case_Insensitive())) { |
| return new PatternMatchPredicate(OpType.Regexp, false, predicand, pattern, true); |
| } else if (checkIfExist(matcher.Not_Similar_To_Case_Insensitive())) { |
| return new PatternMatchPredicate(OpType.Regexp, true, predicand, pattern, true); |
| } else { |
| throw new SQLSyntaxError("Unsupported predicate: " + matcher.getText()); |
| } |
| } else { |
| throw new SQLSyntaxError("Unsupported predicate: " + ctx.pattern_matcher().getText()); |
| } |
| } |
| |
| @Override |
| public IsNullPredicate visitNull_predicate(SQLParser.Null_predicateContext ctx) { |
| Expr predicand = visitRow_value_predicand(ctx.row_value_predicand()); |
| return new IsNullPredicate(ctx.NOT() != null, predicand); |
| } |
| |
| @Override |
| public ExistsPredicate visitExists_predicate(SQLParser.Exists_predicateContext ctx) { |
| return new ExistsPredicate(new SimpleTableSubQuery(visitTable_subquery(ctx.table_subquery())), ctx.NOT() != null); |
| } |
| |
| @Override |
| public ColumnReferenceExpr visitColumn_reference(SQLParser.Column_referenceContext ctx) { |
| ColumnReferenceExpr column = new ColumnReferenceExpr(ctx.name.getText()); |
| if (ctx.tb_name != null) { |
| column.setQualifier(ctx.tb_name.getText()); |
| } |
| |
| return column; |
| } |
| |
| @Override |
| public LiteralValue visitUnsigned_numeric_literal(@NotNull SQLParser.Unsigned_numeric_literalContext ctx) { |
| if (ctx.NUMBER() != null) { |
| long lValue = Long.parseLong(ctx.getText()); |
| if (lValue >= Integer.MIN_VALUE && lValue <= Integer.MAX_VALUE) { |
| return new LiteralValue(ctx.getText(), LiteralType.Unsigned_Integer); |
| } else { |
| return new LiteralValue(ctx.getText(), LiteralType.Unsigned_Large_Integer); |
| } |
| } else { |
| return new LiteralValue(ctx.getText(), LiteralType.Unsigned_Float); |
| } |
| } |
| |
| @Override public FunctionExpr visitAggregate_function( SQLParser.Aggregate_functionContext ctx) { |
| if (ctx.COUNT() != null && ctx.MULTIPLY() != null) { |
| return new CountRowsFunctionExpr(); |
| } else { |
| return visitGeneral_set_function(ctx.general_set_function()); |
| } |
| } |
| |
| @Override public FunctionExpr visitGeneral_set_function(SQLParser.General_set_functionContext ctx) { |
| String signature = ctx.set_function_type().getText(); |
| boolean distinct = checkIfExist(ctx.set_qualifier()) && checkIfExist(ctx.set_qualifier().DISTINCT()); |
| Expr param = visitValue_expression(ctx.value_expression()); |
| |
| return new GeneralSetFunctionExpr(signature, distinct, param); |
| } |
| |
| @Override |
| public FunctionExpr visitRoutine_invocation(SQLParser.Routine_invocationContext ctx) { |
| String signature = ctx.function_name().getText(); |
| FunctionExpr function = new FunctionExpr(signature); |
| if (ctx.sql_argument_list() != null) { |
| int numArgs = ctx.sql_argument_list().value_expression().size(); |
| Expr [] argument_list = new Expr[numArgs]; |
| for (int i = 0; i < numArgs; i++) { |
| argument_list[i] = visitValue_expression(ctx.sql_argument_list(). |
| value_expression().get(i)); |
| } |
| |
| function.setParams(argument_list); |
| } |
| return function; |
| } |
| |
| @Override |
| public NamedExpr visitDerived_column(Derived_columnContext ctx) { |
| NamedExpr target = new NamedExpr(visitValue_expression(ctx.value_expression())); |
| if (ctx.as_clause() != null) { |
| target.setAlias(ctx.as_clause().identifier().getText()); |
| } |
| return target; |
| } |
| |
| @Override |
| public NamedExpr visitQualified_asterisk(Qualified_asteriskContext ctx) { |
| QualifiedAsteriskExpr target = new QualifiedAsteriskExpr(); |
| if (ctx.tb_name != null) { |
| target.setQualifier(ctx.tb_name.getText()); |
| } |
| |
| return new NamedExpr(target); |
| } |
| |
| @Override |
| public Expr visitCharacter_string_type(SQLParser.Character_string_typeContext ctx) { |
| return new LiteralValue(stripQuote(ctx.getText()), LiteralType.String); |
| } |
| |
| @Override |
| public Expr visitCharacter_value_expression(SQLParser.Character_value_expressionContext ctx) { |
| Expr current = visitCharacter_factor(ctx.character_factor(0)); |
| |
| Expr left; |
| Expr right; |
| for (int i = 1; i < ctx.getChildCount(); i++) { |
| left = current; |
| i++; // skip '||' operator |
| right = visitCharacter_factor((Character_factorContext) ctx.getChild(i)); |
| |
| if (left.getType() == OpType.Literal && right.getType() == OpType.Literal) { |
| current = new LiteralValue(((LiteralValue)left).getValue() + ((LiteralValue)right).getValue(), |
| LiteralType.String); |
| } else { |
| current = new BinaryOperator(OpType.Concatenate, left, right); |
| } |
| } |
| |
| return current; |
| } |
| |
| |
| @Override |
| public Expr visitNumeric_value_function(Numeric_value_functionContext ctx) { |
| if (checkIfExist(ctx.extract_expression())) { |
| return visitExtract_expression(ctx.extract_expression()); |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public Expr visitExtract_expression(Extract_expressionContext ctx) { |
| Expr extractTarget = new LiteralValue(ctx.extract_field_string.getText(), LiteralType.String); |
| Expr extractSource; |
| if (checkIfExist(ctx.extract_source().column_reference())) { |
| extractSource = visitColumn_reference(ctx.extract_source().column_reference()); |
| } else if (checkIfExist(ctx.extract_source().datetime_literal())) { |
| extractSource = visitDatetime_literal(ctx.extract_source().datetime_literal()); |
| } else { |
| return null; |
| } |
| |
| String functionName = "date_part"; |
| Expr [] params = new Expr[] {extractTarget, extractSource}; |
| |
| return new FunctionExpr(functionName, params); |
| } |
| |
| @Override |
| public Expr visitTrim_function(SQLParser.Trim_functionContext ctx) { |
| Expr trimSource = visitChildren(ctx.trim_operands().trim_source); |
| String functionName = "trim"; |
| if (checkIfExist(ctx.trim_operands().FROM())) { |
| if (checkIfExist(ctx.trim_operands().trim_specification())) { |
| Trim_specificationContext specification = ctx.trim_operands().trim_specification(); |
| if (checkIfExist(specification.LEADING())) { |
| functionName = "ltrim"; |
| } else if (checkIfExist(specification.TRAILING())) { |
| functionName = "rtrim"; |
| } else { |
| functionName = "trim"; |
| } |
| } |
| } |
| |
| Expr trimCharacters = null; |
| if (checkIfExist(ctx.trim_operands().trim_character)) { |
| trimCharacters = visitCharacter_value_expression(ctx.trim_operands().trim_character); |
| } |
| |
| Expr [] params; |
| if (trimCharacters != null) { |
| params = new Expr[] {trimSource, trimCharacters}; |
| } else { |
| params = new Expr[] {trimSource}; |
| } |
| |
| return new FunctionExpr(functionName, params); |
| } |
| |
| @Override |
| public Expr visitCreate_table_statement(SQLParser.Create_table_statementContext ctx) { |
| String tableName = ctx.table_name().getText(); |
| CreateTable createTable = new CreateTable(tableName); |
| |
| if (checkIfExist(ctx.EXTERNAL())) { |
| createTable.setExternal(); |
| |
| CreateTable.ColumnDefinition [] elements = getDefinitions(ctx.table_elements()); |
| String fileType = ctx.file_type.getText(); |
| String path = stripQuote(ctx.path.getText()); |
| |
| createTable.setTableElements(elements); |
| createTable.setStorageType(fileType); |
| createTable.setLocation(path); |
| } else { |
| if (checkIfExist(ctx.table_elements())) { |
| CreateTable.ColumnDefinition [] elements = getDefinitions(ctx.table_elements()); |
| createTable.setTableElements(elements); |
| } |
| |
| if (checkIfExist(ctx.USING())) { |
| String fileType = ctx.file_type.getText(); |
| createTable.setStorageType(fileType); |
| } |
| |
| if (checkIfExist(ctx.query_expression())) { |
| Expr subquery = visitQuery_expression(ctx.query_expression()); |
| createTable.setSubQuery(subquery); |
| } |
| } |
| |
| if (checkIfExist(ctx.param_clause())) { |
| Map<String, String> params = escapeTableMeta(getParams(ctx.param_clause())); |
| createTable.setParams(params); |
| } |
| |
| if (checkIfExist(ctx.table_partitioning_clauses())) { |
| PartitionMethodDescExpr partitionMethodDesc = |
| parseTablePartitioningClause(ctx.table_partitioning_clauses()); |
| createTable.setPartitionMethod(partitionMethodDesc); |
| } |
| return createTable; |
| } |
| |
| private CreateTable.ColumnDefinition [] getDefinitions(SQLParser.Table_elementsContext ctx) { |
| int size = ctx.field_element().size(); |
| CreateTable.ColumnDefinition [] elements = new CreateTable.ColumnDefinition[size]; |
| for (int i = 0; i < size; i++) { |
| String name = ctx.field_element(i).name.getText(); |
| DataTypeExpr typeDef = visitData_type(ctx.field_element(i).field_type().data_type()); |
| elements[i] = new CreateTable.ColumnDefinition(name, typeDef); |
| } |
| |
| return elements; |
| } |
| |
| public PartitionMethodDescExpr parseTablePartitioningClause(SQLParser.Table_partitioning_clausesContext ctx) { |
| |
| if (checkIfExist(ctx.range_partitions())) { // For Range Partition |
| Range_partitionsContext rangePartitionsContext = ctx.range_partitions(); |
| List<Range_value_clauseContext> rangeValueClause = rangePartitionsContext. |
| range_value_clause_list().range_value_clause(); |
| |
| List<RangePartitionSpecifier> specifiers = Lists.newArrayList(); |
| |
| for (Range_value_clauseContext rangeValue : rangeValueClause) { |
| if (checkIfExist(rangeValue.MAXVALUE())) { // LESS THAN (MAXVALUE) |
| specifiers.add(new RangePartitionSpecifier(rangeValue.partition_name().getText())); |
| } else { // LESS THAN (expr) |
| specifiers.add(new RangePartitionSpecifier(rangeValue.partition_name().getText(), |
| visitValue_expression(rangeValue.value_expression()))); |
| } |
| } |
| return new CreateTable.RangePartition(getColumnReferences(ctx.range_partitions().column_reference_list()), |
| specifiers); |
| |
| } else if (checkIfExist(ctx.hash_partitions())) { // For Hash Partition |
| Hash_partitionsContext hashPartitions = ctx.hash_partitions(); |
| |
| if (checkIfExist(hashPartitions.hash_partitions_by_quantity())) { // PARTITIONS (num) |
| return new HashPartition(getColumnReferences(hashPartitions.column_reference_list()), |
| visitNumeric_value_expression(hashPartitions.hash_partitions_by_quantity().quantity)); |
| |
| } else { // ( PARTITION part_name , ...) |
| List<CreateTable.PartitionSpecifier> specifiers = Lists.newArrayList(); |
| for (Individual_hash_partitionContext partition : |
| hashPartitions.individual_hash_partitions().individual_hash_partition()) { |
| specifiers.add(new CreateTable.PartitionSpecifier(partition.partition_name().getText())); |
| } |
| return new HashPartition(getColumnReferences(hashPartitions.column_reference_list()), specifiers); |
| } |
| |
| } else if (checkIfExist(ctx.list_partitions())) { // For List Partition |
| List_partitionsContext listPartitions = ctx.list_partitions(); |
| List<List_value_partitionContext> partitions = listPartitions.list_value_clause_list().list_value_partition(); |
| List<ListPartitionSpecifier> specifiers = Lists.newArrayList(); |
| |
| for (List_value_partitionContext listValuePartition : partitions) { |
| int size = listValuePartition.in_value_list().row_value_expression().size(); |
| Expr [] exprs = new Expr[size]; |
| for (int i = 0; i < size; i++) { |
| exprs[i] = visitRow_value_expression(listValuePartition.in_value_list().row_value_expression(i)); |
| } |
| specifiers.add(new ListPartitionSpecifier(listValuePartition.partition_name().getText(), |
| new ValueListExpr(exprs))); |
| } |
| return new ListPartition(getColumnReferences(ctx.list_partitions().column_reference_list()), specifiers); |
| |
| } else if (checkIfExist(ctx.column_partitions())) { // For Column Partition (Hive Style) |
| return new CreateTable.ColumnPartition(getDefinitions(ctx.column_partitions().table_elements()), true); |
| } else { |
| throw new SQLSyntaxError("Invalid Partition Type: " + ctx.toStringTree()); |
| } |
| } |
| |
| @Override |
| public DataTypeExpr visitData_type(SQLParser.Data_typeContext ctx) { |
| SQLParser.Predefined_typeContext predefined_type = ctx.predefined_type(); |
| |
| DataTypeExpr typeDefinition = null; |
| if (predefined_type.character_string_type() != null) { |
| SQLParser.Character_string_typeContext character_string_type = |
| predefined_type.character_string_type(); |
| |
| if ((character_string_type.CHARACTER() != null || character_string_type.CHAR() != null) && |
| character_string_type.VARYING() == null) { |
| |
| typeDefinition = new DataTypeExpr(Type.CHAR.name()); |
| |
| if (character_string_type.type_length() != null) { |
| typeDefinition.setLengthOrPrecision( |
| Integer.parseInt(character_string_type.type_length().NUMBER().getText())); |
| } |
| |
| } else if (character_string_type.VARCHAR() != null |
| || character_string_type.VARYING() != null) { |
| |
| typeDefinition = new DataTypeExpr(Type.VARCHAR.name()); |
| |
| if (character_string_type.type_length() != null) { |
| typeDefinition.setLengthOrPrecision( |
| Integer.parseInt(character_string_type.type_length().NUMBER().getText())); |
| } |
| |
| } else if (character_string_type.TEXT() != null) { |
| typeDefinition = new DataTypeExpr(Type.TEXT.name()); |
| } |
| |
| } else if (predefined_type.national_character_string_type() != null) { |
| SQLParser.National_character_string_typeContext nchar_type = |
| predefined_type.national_character_string_type(); |
| if ((nchar_type.CHAR() != null || nchar_type.CHARACTER() != null |
| || nchar_type.NCHAR() != null) && nchar_type.VARYING() == null) { |
| typeDefinition = new DataTypeExpr(Type.NCHAR.name()); |
| } else if (nchar_type.NVARCHAR() != null || nchar_type.VARYING() != null) { |
| typeDefinition = new DataTypeExpr(Type.NVARCHAR.name()); |
| } |
| |
| if (nchar_type.type_length() != null) { |
| typeDefinition.setLengthOrPrecision( |
| Integer.parseInt(nchar_type.type_length().NUMBER().getText())); |
| } |
| |
| } else if (predefined_type.binary_large_object_string_type() != null) { |
| SQLParser.Binary_large_object_string_typeContext blob_type = |
| predefined_type.binary_large_object_string_type(); |
| typeDefinition = new DataTypeExpr(Type.BLOB.name()); |
| if (blob_type.type_length() != null) { |
| typeDefinition.setLengthOrPrecision( |
| Integer.parseInt(blob_type.type_length().NUMBER().getText())); |
| } |
| } else if (predefined_type.numeric_type() != null) { |
| // exact number |
| if (predefined_type.numeric_type().exact_numeric_type() != null) { |
| SQLParser.Exact_numeric_typeContext exactType = |
| predefined_type.numeric_type().exact_numeric_type(); |
| if (exactType.TINYINT() != null || exactType.INT1() != null) { |
| typeDefinition = new DataTypeExpr(Type.INT1.name()); |
| } else if (exactType.INT2() != null || exactType.SMALLINT() != null) { |
| typeDefinition = new DataTypeExpr(Type.INT2.name()); |
| } else if (exactType.INT4() != null || exactType.INTEGER() != null || |
| exactType.INT() != null) { |
| typeDefinition = new DataTypeExpr(Type.INT4.name()); |
| } else if (exactType.INT8() != null || exactType.BIGINT() != null) { |
| typeDefinition = new DataTypeExpr(Type.INT8.name()); |
| } else if (exactType.NUMERIC() != null) { |
| typeDefinition = new DataTypeExpr(Type.NUMERIC.name()); |
| } else if (exactType.DECIMAL() != null || exactType.DEC() != null) { |
| typeDefinition = new DataTypeExpr(Type.DECIMAL.name()); |
| } |
| |
| if (typeDefinition.getTypeName().equals(Type.NUMERIC.name()) || |
| typeDefinition.getTypeName().equals(Type.DECIMAL.name())) { |
| if (exactType.precision_param() != null) { |
| if (exactType.precision_param().scale != null) { |
| typeDefinition.setScale( |
| Integer.parseInt(exactType.precision_param().scale.getText())); |
| } |
| typeDefinition.setLengthOrPrecision( |
| Integer.parseInt(exactType.precision_param().precision.getText())); |
| } |
| } |
| } else { // approximate number |
| SQLParser.Approximate_numeric_typeContext approximateType = |
| predefined_type.numeric_type().approximate_numeric_type(); |
| if (approximateType.FLOAT() != null || approximateType.FLOAT4() != null |
| || approximateType.REAL() != null) { |
| typeDefinition = new DataTypeExpr(Type.FLOAT4.name()); |
| } else if (approximateType.FLOAT8() != null || approximateType.DOUBLE() != null) { |
| typeDefinition = new DataTypeExpr(Type.FLOAT8.name()); |
| } |
| } |
| } else if (predefined_type.boolean_type() != null) { |
| typeDefinition = new DataTypeExpr(Type.BOOLEAN.name()); |
| } else if (predefined_type.datetime_type() != null) { |
| SQLParser.Datetime_typeContext dateTimeType = predefined_type.datetime_type(); |
| if (dateTimeType.DATE() != null) { |
| typeDefinition = new DataTypeExpr(Type.DATE.name()); |
| } else if (dateTimeType.TIME(0) != null && dateTimeType.ZONE() == null) { |
| typeDefinition = new DataTypeExpr(Type.TIME.name()); |
| } else if ((dateTimeType.TIME(0) != null && dateTimeType.ZONE() != null) || |
| dateTimeType.TIMETZ() != null) { |
| typeDefinition = new DataTypeExpr(Type.TIMEZ.name()); |
| } else if (dateTimeType.TIMESTAMP() != null && dateTimeType.ZONE() == null) { |
| typeDefinition = new DataTypeExpr(Type.TIMESTAMP.name()); |
| } else if ((dateTimeType.TIMESTAMP() != null && dateTimeType.ZONE() != null) || |
| dateTimeType.TIMESTAMPTZ() != null) { |
| typeDefinition = new DataTypeExpr(Type.TIMESTAMPZ.name()); |
| } |
| } else if (predefined_type.bit_type() != null) { |
| SQLParser.Bit_typeContext bitType = predefined_type.bit_type(); |
| if (bitType.VARBIT() != null || bitType.VARYING() != null) { |
| typeDefinition = new DataTypeExpr(Type.VARBIT.name()); |
| } else { |
| typeDefinition = new DataTypeExpr(Type.BIT.name()); |
| } |
| if (bitType.type_length() != null) { |
| typeDefinition.setLengthOrPrecision( |
| Integer.parseInt(bitType.type_length().NUMBER().getText())); |
| } |
| } else if (predefined_type.binary_type() != null) { |
| SQLParser.Binary_typeContext binaryType = predefined_type.binary_type(); |
| if (binaryType.VARBINARY() != null || binaryType.VARYING() != null) { |
| typeDefinition = new DataTypeExpr(Type.VARBINARY.name()); |
| } else { |
| typeDefinition = new DataTypeExpr(Type.BINARY.name()); |
| } |
| |
| if (binaryType.type_length() != null) { |
| typeDefinition.setLengthOrPrecision( |
| Integer.parseInt(binaryType.type_length().NUMBER().getText())); |
| } |
| } else if (predefined_type.network_type() != null) { |
| typeDefinition = new DataTypeExpr(Type.INET4.name()); |
| } |
| |
| return typeDefinition; |
| } |
| |
| @Override |
| public Expr visitInsert_statement(SQLParser.Insert_statementContext ctx) { |
| Insert insertExpr = new Insert(); |
| |
| if (ctx.OVERWRITE() != null) { |
| insertExpr.setOverwrite(); |
| } |
| |
| if (ctx.table_name() != null) { |
| insertExpr.setTableName(ctx.table_name().getText()); |
| |
| if (ctx.column_name_list() != null) { |
| String [] targetColumns = new String[ctx.column_name_list().identifier().size()]; |
| for (int i = 0; i < targetColumns.length; i++) { |
| targetColumns[i] = ctx.column_name_list().identifier().get(i).getText(); |
| } |
| |
| insertExpr.setTargetColumns(targetColumns); |
| } |
| } |
| |
| if (ctx.LOCATION() != null) { |
| insertExpr.setLocation(stripQuote(ctx.path.getText())); |
| |
| if (ctx.USING() != null) { |
| insertExpr.setStorageType(ctx.file_type.getText()); |
| |
| if (ctx.param_clause() != null) { |
| insertExpr.setParams(escapeTableMeta(getParams(ctx.param_clause()))); |
| } |
| } |
| } |
| |
| insertExpr.setSubQuery(visitQuery_expression(ctx.query_expression())); |
| |
| Preconditions.checkState(insertExpr.hasTableName() || insertExpr.hasLocation(), |
| "Either a table name or a location should be given."); |
| Preconditions.checkState(insertExpr.hasTableName() ^ insertExpr.hasLocation(), |
| "A table name and a location cannot coexist."); |
| return insertExpr; |
| } |
| |
| @Override |
| public Expr visitDrop_table_statement(SQLParser.Drop_table_statementContext ctx) { |
| return new DropTable(ctx.table_name().getText(), checkIfExist(ctx.PURGE())); |
| } |
| |
| |
| private Map<String, String> getParams(SQLParser.Param_clauseContext ctx) { |
| Map<String, String> params = new HashMap<String, String>(); |
| for (int i = 0; i < ctx.param().size(); i++) { |
| params.put(stripQuote(ctx.param(i).key.getText()), stripQuote(ctx.param(i).value.getText())); |
| } |
| |
| return params; |
| } |
| |
| public Map<String, String> escapeTableMeta(Map<String, String> map) { |
| Map<String, String> params = new HashMap<String, String>(); |
| for (Map.Entry<String, String> entry : map.entrySet()) { |
| if (entry.getKey().equals(CatalogConstants.CSVFILE_DELIMITER)) { |
| params.put(entry.getKey(), escapeDelimiter(entry.getValue())); |
| } else { |
| params.put(entry.getKey(), entry.getValue()); |
| } |
| } |
| return params; |
| } |
| |
| public static String escapeDelimiter(String value) { |
| try { |
| String delimiter = StringEscapeUtils.unescapeJava(value); |
| delimiter = new String(new byte[]{Byte.valueOf(delimiter).byteValue()}); |
| return StringEscapeUtils.escapeJava(delimiter); |
| } catch (NumberFormatException e) { |
| } |
| return value; |
| } |
| |
| private static String stripQuote(String str) { |
| return str.substring(1, str.length() - 1); |
| } |
| |
| @Override public Expr visitCast_specification(SQLParser.Cast_specificationContext ctx) { |
| Expr operand = visitChildren(ctx.cast_operand()); |
| DataTypeExpr castTarget = visitData_type(ctx.cast_target().data_type()); |
| return new CastExpr(operand, castTarget); |
| } |
| |
| @Override public Expr visitUnsigned_value_specification(@NotNull SQLParser.Unsigned_value_specificationContext ctx) { |
| return visitChildren(ctx); |
| } |
| |
| @Override |
| public Expr visitUnsigned_literal(@NotNull SQLParser.Unsigned_literalContext ctx) { |
| if (checkIfExist(ctx.unsigned_numeric_literal())) { |
| return visitUnsigned_numeric_literal(ctx.unsigned_numeric_literal()); |
| } else { |
| return visitGeneral_literal(ctx.general_literal()); |
| } |
| } |
| |
| @Override |
| public Expr visitGeneral_literal(SQLParser.General_literalContext ctx) { |
| if (checkIfExist(ctx.Character_String_Literal())) { |
| return new LiteralValue(stripQuote(ctx.Character_String_Literal().getText()), LiteralType.String); |
| } else if (checkIfExist(ctx.datetime_literal())) { |
| return visitDatetime_literal(ctx.datetime_literal()); |
| } else { |
| return new BooleanLiteral(checkIfExist(ctx.boolean_literal().TRUE())); |
| } |
| } |
| |
| @Override |
| public Expr visitDatetime_literal(@NotNull SQLParser.Datetime_literalContext ctx) { |
| if (checkIfExist(ctx.time_literal())) { |
| return visitTime_literal(ctx.time_literal()); |
| } else if(checkIfExist(ctx.date_literal())) { |
| return visitDate_literal(ctx.date_literal()); |
| } else { |
| return visitTimestamp_literal(ctx.timestamp_literal()); |
| } |
| } |
| |
| @Override |
| public Expr visitTime_literal(SQLParser.Time_literalContext ctx) { |
| String timePart = stripQuote(ctx.time_string.getText()); |
| return new TimeLiteral(parseTime(timePart)); |
| } |
| |
| @Override |
| public Expr visitDate_literal(SQLParser.Date_literalContext ctx) { |
| String datePart = stripQuote(ctx.date_string.getText()); |
| return new DateLiteral(parseDate(datePart)); |
| } |
| |
| @Override |
| public Expr visitTimestamp_literal(SQLParser.Timestamp_literalContext ctx) { |
| String timestampStr = stripQuote(ctx.timestamp_string.getText()); |
| String [] parts = timestampStr.split(" "); |
| String datePart = parts[0]; |
| String timePart = parts[1]; |
| return new TimestampLiteral(parseDate(datePart), parseTime(timePart)); |
| } |
| |
| private DateValue parseDate(String datePart) { |
| // e.g., 1980-04-01 |
| String [] parts = datePart.split("-"); |
| return new DateValue(parts[0], parts[1], parts[2]); |
| } |
| |
| private TimeValue parseTime(String timePart) { |
| // e.g., 12:01:50.399 |
| String [] parts = timePart.split(":"); |
| |
| TimeValue time; |
| boolean hasFractionOfSeconds = parts[2].indexOf('.') > 0; |
| if (hasFractionOfSeconds) { |
| String [] secondsParts = parts[2].split("\\."); |
| time = new TimeValue(parts[0], parts[1], secondsParts[0]); |
| if (secondsParts.length == 2) { |
| time.setSecondsFraction(secondsParts[1]); |
| } |
| } else { |
| time = new TimeValue(parts[0], parts[1], parts[2]); |
| } |
| return time; |
| } |
| } |
